Longevity
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The rapamycin reversal: why the longevity crowd is backing off
The best-evidenced longevity drug in mice had its confidence knocked in 2024 and 2025. A null human trial, an epigenetic warning sign, and one very public quit.
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What epigenetic clocks actually measure (DunedinPACE vs GrimAge vs PhenoAge)
Three popular clocks give three different answers because they were trained on three different things. One measures mortality risk, one measures your rate of aging, and a single reading is noisier than the marketing admits.